"Great Blue Hole The Great Blue Hole is a giant marine sinkhole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll from the mainland and Belize City. The hole is circular in shape, across and deep. It was formed during several episodes of quaternary glaciation when sea levels were much lower. Analysis of stalactites found in the Great Blue Hole shows that formation took place 153,000; 66,000; 60,000; and 15,000 years ago. As the ocean began to rise again, the cave was flooded. The Great Blue Hole is a part of the larger"
"Blue Hole (New Mexico) The Blue Hole of Santa Rosa is a circular, bell-shaped pool east of Santa Rosa, New Mexico that is one of the most popular dive destinations in the US for SCUBA diving and training. The Blue Hole is an artesian well that was once used as a fish hatchery. It is a clear blue body of water with a constant temperature and constant inflow of . While the surface is only in diameter, it expands to a diameter of at the bottom. Since Santa Rosa, New Mexico is at an elevation of , it is necessary"
"for divers to use high-altitude dive tables to compute the dive profile and decompression stops when diving in the Blue Hole. The pool is open for public use with no lifeguards on duty. On March 26, 2016, 43-year-old California diver Shane Thompson, a Navy veteran from the ADM Exploration Foundation, was exploring passageways where he became trapped and drowned. Blue Hole (New Mexico) The Blue Hole of Santa Rosa is a circular, bell-shaped pool east of Santa Rosa, New Mexico that is one of the most popular dive destinations in the US for SCUBA diving and training. The Blue Hole"
"Blue Hole (Red Sea) The Blue Hole is a diving location on the southeast Sinai, a few kilometres north of Dahab, Egypt on the coast of the Red Sea. The Blue Hole is a submarine sinkhole, with a maximum depth within the hole of just over 100 m (328 feet). There is a shallow opening to the sea around 6 m (20 feet) deep, known as ""the saddle"", and a 26 m (85 feet) long tunnel, known as ""the arch"", whose top is at a depth of 55 m (181 feet), and whose bottom falls away as it reaches the"
"Omar says: Two television documentaries have been produced about diver deaths at the Blue Hole, investigating the video of the death of Yuri Lipski: Blue Hole (Red Sea) The Blue Hole is a diving location on the southeast Sinai, a few kilometres north of Dahab, Egypt on the coast of the Red Sea. The Blue Hole is a submarine sinkhole, with a maximum depth within the hole of just over 100 m (328 feet). There is a shallow opening to the sea around 6 m (20 feet) deep, known as ""the saddle"", and a 26 m (85 feet) long tunnel,"
"divers. Some of the most spectacular are the Zacatón cenote in Mexico (the world's deepest water-filled sinkhole), the Boesmansgat sinkhole in South Africa, Sarisariñama tepuy in Venezuela, the Sótano del Barro in Mexico, and in the town of Mount Gambier, South Australia. Sinkholes that form in coral reefs and islands that collapse to enormous depths are known as blue holes and often become popular diving spots. Large and visually unusual sinkholes have been well-known to local people since ancient times. Nowadays sinkholes are grouped and named in site-specific or generic names. Some examples of such names are listed below. The"
"on land that are deeper than Dragon Hole. These include Mexico's Zacatón (), Pozzo del Merro in Italy (), and Hranice abyss in the Czech republic (). Dragon Hole Dragon Hole is the deepest known underwater sinkhole (blue hole) in the world. It is deep. and is located about south of Discovery Reef in the Paracel Islands at . Blue holes are characteristically hundreds of metres deep and generate a distinctive blue colour when seen from above. The local fishermen call it the ""eye"" of the South China Sea, and believe it is where the Monkey King, depicted in the"
"Zacatón Zacatón (El Zacatón sinkhole) is a thermal water-filled sinkhole belonging to the Zacatón system - a group of unusual karst features located in Aldama Municipality near the Sierra de Tamaulipas in the northeastern state of Tamaulipas, Mexico. It is the deepest known water-filled sinkhole in the world with a total depth of : the plus deep Pozzo del Merro (Sant'Angelo Romano, Latium Region, Italy) is deeper (actual depth yet unknown), but Using an autonomous robot, the underwater portion of Zacatón has been measured to be deep (a difference between the rim of cliff and surface of water adds to"
"Dean's Blue Hole Dean's Blue Hole is a blue hole located in The Bahamas in a bay west of Clarence Town on Long Island and which is the world's second deepest with a depth of after the Dragon Hole in the South China Sea. For several years it was considered the deepest blue hole in the world. A blue hole is a water-filled sinkhole with the entrance below the water level. They can be formed in different karst processes, for example, by rainwater soaking through fractures of limestone bedrock onto the watertable. Sea level here has changed: for example, during"
"San Matías Gulf The San Matias Gulf is an inlet of the Atlantic Ocean off the coast of Patagonia, Argentina. It is bordered by the Río Negro Province to the north and west, and the Valdes Peninsula of the Chubut Province to the south. It is ""one of the largest gulfs in the Patagonia region"". The gulf is surrounded by plateaus and depressions below sea level similar to the gulf itself but that are not flooded by the sea at present. The gulf was the subject of scientific investigation for its unusually large sand waves and their movement. The local"
"Middle America Trench The Middle America Trench is a major subduction zone, an oceanic trench in the eastern Pacific Ocean off the southwestern coast of Middle America, stretching from central Mexico to Costa Rica. The trench is 1,700 miles (2,750 km) long and is 21,880 feet (6,669 m) at its deepest point. The trench is the boundary between the Rivera, Cocos, and Nazca plates on one side and the North American and Caribbean plates on the other. It is the 18th-deepest trench in the world. Many large earthquakes have occurred in the area of the Middle America Trench. The Middle"
"east of that in the seaward side. Middle America Trench The Middle America Trench is a major subduction zone, an oceanic trench in the eastern Pacific Ocean off the southwestern coast of Middle America, stretching from central Mexico to Costa Rica. The trench is 1,700 miles (2,750 km) long and is 21,880 feet (6,669 m) at its deepest point. The trench is the boundary between the Rivera, Cocos, and Nazca plates on one side and the North American and Caribbean plates on the other. It is the 18th-deepest trench in the world. Many large earthquakes have occurred in the area"
"Charco Azul Charco Azul is a bay and port just outside Puerto Armuelles, in the southwest corner of Panama near the border with Costa Rica. It lies just to the east of the Burica Peninsula, and forms part of the larger Gulf of Chiriquí. Charco Azul translates to ""blue ditch/puddle."" This name comes from its steep slope off the shore, where the continental shelf is extremely thin. A few meters into the Pacific Ocean, the water is already about 200 m deep. Because of this depth, engineers chose Charco Azul as the site of a port for use by supertankers."
"Buraco das Araras (Goiás) Buraco das Araras (GO-016) (English: Hole of the Macaws) is one of the largest quartzitic caves located in the State of Goiás, Brazil. It is located about 120 kilometers west of Brasília and only 16 km from the district of Bezerra, in the municipality of Formosa. It is considered one of the largest sinkholes (dolinas) in the world. Discovered in 1912, it is believed that the hole has been formed by the collapse of the roof of a cave. The cave itself is 105 meters deep and 295 meters wide, having in its midst a dense"
"for thousands and thousands of years, they might have evolved to be different from anything scientists have ever discovered and characterized before. Zacatón Zacatón (El Zacatón sinkhole) is a thermal water-filled sinkhole belonging to the Zacatón system - a group of unusual karst features located in Aldama Municipality near the Sierra de Tamaulipas in the northeastern state of Tamaulipas, Mexico. It is the deepest known water-filled sinkhole in the world with a total depth of : the plus deep Pozzo del Merro (Sant'Angelo Romano, Latium Region, Italy) is deeper (actual depth yet unknown), but Using an autonomous robot, the underwater"
"Puerto Rico Trench The Puerto Rico Trench is located on the boundary between the Caribbean Sea and the Atlantic Ocean. The oceanic trench is associated with a complex transition between the Lesser Antilles subduction zone to the south and the major transform fault zone or plate boundary, which extends west between Cuba and Hispaniola through the Cayman Trough to the coast of Central America. The trench is long and has a maximum depth of or 5.373 miles at Milwaukee Deep, which is the deepest point in the Atlantic Ocean and the deepest point not in the Pacific Ocean. Scientific studies"
"Buraco das Araras Private Natural Heritage Reserve The Buraco das Araras Private Natural Heritage Reserve () is a privately operated conservation area in the state of Mato Grosso do Sul, Brazil. It takes its name from the Buraco das Araras (Hole of Macaws), a large sinkhole that is the main feature of the reserve. The reserve is in the municipality of Jardim, Mato Grosso do Sul and contains a huge sinkhole in circumference and deep. The hole would have been known to the original inhabitants of the area. It was rediscovered in 1912 by a local worker, and named the"
"Blue Hole (Castalia) The Blue Hole is a fresh water pond located in Castalia, Erie County, Ohio, in the United States. From the 1920s to 1990 the Blue Hole was a tourist site, attracting 165,000 visitors annually at the height of its popularity, partly because of its location on State Route 269, about southwest of the Cedar Point amusement park in Sandusky, Ohio. The Blue Hole captured the public’s interest because of its size, about in diameter, clarity, vibrant blue hue, and enigmatic ""bottomless"" appearance. Contrary to prevalent belief, the depth of the Blue Hole is not unknown, but has"
"Dragon Hole Dragon Hole is the deepest known underwater sinkhole (blue hole) in the world. It is deep. and is located about south of Discovery Reef in the Paracel Islands at . Blue holes are characteristically hundreds of metres deep and generate a distinctive blue colour when seen from above. The local fishermen call it the ""eye"" of the South China Sea, and believe it is where the Monkey King, depicted in the novel ""Journey to the West"", found his golden cudgel. Dragon Hole is almost deeper than Dean's Blue Hole in the Bahamas. There are several fresh water sinkholes"
"Devil's Throat at Punta Sur The Devil's Throat (Spanish: La Garganta del Diablo) is an underwater cave formation near the island of Cozumel, Mexico, at Punta Sur in the Arrecifes de Cozumel National Park; it starts at approximately of depth and opens up at approximately - right at the edge of recreational dive limits. The Devil's Throat is considered a ""must dive"" experience by scuba divers visiting Cozumel. Yet, due to the depth and the fact that it is a cave, it is considered an advanced dive and can therefore be dangerous (and even deadly) to inexperienced divers. A longer"
"Blue"", and to central Mexico where resurgence rivers such as ""Rio Mante"", and sinkholes such as ""Zacaton"" were documented. In the Yucatán, the 1980s ended with the discoveries of the ""Dos Ojos"" and ""Nohoch Nah Chich"" cave systems which led into a long competition of which exploration team had the longest recorded underwater cave system in the world at the time. The beginning of the 1990s led into the discovery of underwater caves such as ""Aereolito"" on the island of Cozumel, ultimately leading to the 5th biggest underwater cave in the world. By the mid-1990s a push into the central"
"NR-1 Sinkhole The NR-1 Sinkhole is a giant underwater sinkhole located in the Straits of Florida southwest of Key West, Florida. It is found at an approximate depth of of water at the foot of the Pourtales Escarpment, an area of Quaternary sediment. It was discovered in October 1994 during a survey conducted by the American submarine NR-1, a U.S. Navy nuclear research submarine, and is named for the submarine. It was first identified via side-scan sonar and near-bottom echo sounder data, prompting a second survey in May 1995 to confirm the finding. Discovery of the NR-1 Sinkhole prompted scientific"
"Isla Holbox Holbox (""black hole"" in Yucatec Maya) is an island in the Mexican state of Quintana Roo, located on the north coast of the Yucatán Peninsula. It is approximately long and wide, and it is separated from the mainland by 10 km of shallow lagoon that is home to flamingos, pelicans and other rich birdlife. Holbox Island is part of the Municipality of Lázaro Cárdenas and also part of the Yum Balam Biosphere Reserve. Not yet heavily touristed, the island's main industry is fishing. However, the island is developing a growing tourist industry in the form of whale shark"
"Guggenheim museum project. Barranca de Oblatos Barranca de Oblatos (), also known as Barranca de Huentitán, is a canyon carved by the Río Grande de Santiago in Mexico in the state of Jalisco. It lies on the northeast side of the municipality of Guadalajara and on the edge of the municipalities of Tonalá, Zapotlanejo, Ixtlahuacán del Río and Zapopan in the Guadalajara Metropolitan Area. Its beauty and structure make it a slightly smaller scale version of the Grand Canyon in the United States, and Barranca del Cobre in Chihuahua. It includes approximately and it has an average depth of ."
"Pan-American Highway, that the Panama section of the highway be extended to the Caribbean coast and end at the Gulf of Urabá, then be connected by ferry to existing highways in Colombia. The area surrounding the gulf comprises a geopolitical subregion of Colombia known as Urabá Antioquia. Gulf of Urabá The Gulf of Urabá is a gulf on the northern coast of Colombia. It is part of the Caribbean Sea. It is a long, wide inlet located on the coast of Colombia, close to the connection of the continent to the Isthmus of Panama. The town of Turbo, Colombia, lies"
"Geography of Honduras Honduras is a country in Central America. Honduras borders the Caribbean Sea and the North Pacific Ocean. Guatemala lies to the west, Nicaragua south east and El Salvador to the south west. Honduras is the second largest Central American republic, with a total area of . Honduras has a Caribbean coastline extending from the mouth of the Río Motagua in the west to the mouth of the Río Coco in the east, at Cape Gracias a Dios. The southeastern side of the triangle is a land border with Nicaragua. It follows the Río Coco near the Caribbean"
"this MPA. The Gully (Atlantic) The Gully is a large underwater canyon in the Atlantic Ocean near the edge of the eastern continental shelf of North America. It is located east of Nova Scotia near Sable Island. The Gully is 40 km long and 16 km wide and reaches depths of over 1 km. It is home to a resident population of Northern Bottlenose Whale, Purple sunstarfish and deep-sea coral. Other species of whales, dolphins, fish, squid and shrimp also live there. In 2004, Canada designated The Gully a Marine Protected Area. Fisheries and Oceans Canada prohibit oil and gas"
"circular hole with vertical walls and killing five people. Its location was in a poor neighbourhood in northeastern Guatemala City, at the intersection of 24 Avenida and 6 Calle. This hole, which is classified by geologists as a ""piping pseudokarst"" feature, was deep. As a result, one thousand people were evacuated from the area. Police established a 500-yard (457-metre) no-go zone around the sinkhole. The hole was later filled in with soil cement made from cement, limestone, and water known locally as ""lodocreto"". $2.7 million was spent by the Guatemalan government in order to fill the sinkhole and to redirect"
"The whole project was budgeted at 1.5 billion dollars. Also planned for the deepest part of the tunnel is the Agua Negra Deep Experiment Site (ANDES): an underground laboratory. Because all currently operating deep underground laboratories are located in the Northern Hemisphere, a Southern Hemisphere site would have some unique benefits: ANDES is not expected to be ready before 2027. Elqui Province, Chile<br> San Juan Province, Argentina Agua Negra Pass The Agua Negra Pass (Spanish: Paso de Agua Negra) is a pass over the Andes mountains which connects Argentina and Chile. The highest point of this pass is at AMSL."
"of about . The sea's deepest point is the Cayman Trough, between the Cayman Islands and Jamaica, at below sea level. The Caribbean coastline has many gulfs and bays: the Gulf of Gonâve, Gulf of Venezuela, Gulf of Darién, Golfo de los Mosquitos, Gulf of Paria and Gulf of Honduras. The Caribbean Sea has the world's second biggest barrier reef, the Mesoamerican Barrier Reef. It runs along the coasts of Mexico, Belize, Guatemala, and Honduras. The name ""Caribbean"" derives from the Caribs, one of the region's dominant Native American groups at the time of European contact during the late 15th"
"Central America Central America (, , ""Centroamérica"" ) is located on the southern tip of North America, or is sometimes defined as a subcontinent of the Americas , bordered by Mexico to the north, Colombia to the southeast, the Caribbean Sea to the east, and the Pacific Ocean to the west and south. Central America consists of seven countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama. The combined population of Central America has been estimated to be 41,739,000 (2009 estimate) and 42,688,190 (2012 estimate). Central America is a part of the Mesoamerican biodiversity hotspot, which extends from"
"on top of it, using concrete blocks. Misteriosa Bank The Misteriosa Bank () is a submerged bank or atoll in the Caribbean Sea, located at – approximately equidistant from Mexico (), Honduras () and Cuba (). The Misteriosa Bank is long and wide. Its area is . Immediately south of it is Rosario Bank. The closest piece of land is the Swan Islands, Honduras, to the south and separated from it by the more than Cayman Trough. The reported depth is on the average or up to , with depths of along the rim, or . It is part of"
"The Gully (Atlantic) The Gully is a large underwater canyon in the Atlantic Ocean near the edge of the eastern continental shelf of North America. It is located east of Nova Scotia near Sable Island. The Gully is 40 km long and 16 km wide and reaches depths of over 1 km. It is home to a resident population of Northern Bottlenose Whale, Purple sunstarfish and deep-sea coral. Other species of whales, dolphins, fish, squid and shrimp also live there. In 2004, Canada designated The Gully a Marine Protected Area. Fisheries and Oceans Canada prohibit oil and gas exploration within"